Example usage for org.apache.commons.httpclient ConnectionPoolTimeoutException ConnectionPoolTimeoutException

Introduction

In this page you can find the example usage for org.apache.commons.httpclient ConnectionPoolTimeoutException ConnectionPoolTimeoutException.

Prototype

public ConnectionPoolTimeoutException(String paramString) 

Source Link

Usage

From source file:com.exalead.io.failover.MonitoredHttpConnectionManager.java

/** 
 * Try to acquire a connection from all hosts in the cluster. Loop if all hosts are down
 * until the timeout has expired./*from   ww w  . j ava 2 s  .co m*/
 */
private HttpConnection doGetConnection(long timeout) throws ConnectionPoolTimeoutException {
    // TODO: connections restriction + connections restriction timeout
    //int maxTotalConnections = this.params.getMaxTotalConnections();
    //int maxHostConnections = maxTotalConnections;

    long start = System.currentTimeMillis();
    boolean useTimeout = (timeout > 0);

    if (shutdown) {
        throw new IllegalStateException("Connection factory has been shutdown.");
    }

    NDC.push("acquire");
    try {
        HttpConnection connection = null;
        int loops = 0;
        while (true) {
            loops++;
            if (loops > failMaxTries) {
                throw new ConnectionPoolTimeoutException("Could not acquire any connection (all hosts down)");
            }
            if (loops > 1) {
                logger.info("Restart trying to acquire on any host (loop " + loops + ")");
            }

            try {
                connection = acquireConnectionOnAnyHost();
                break;
            } catch (PoolAcquireException e) {
                logger.warn("All cluster hosts are down !");
                if (useTimeout && (System.currentTimeMillis() - start > failTimeout)) {
                    logger.warn("Timeout -> ConnectionPoolTimeoutException");
                    throw new ConnectionPoolTimeoutException(
                            "Could not acquire any connection (all hosts down)");
                }
                try {
                    Thread.sleep(50);
                } catch (InterruptedException e2) {
                }
            }
        }
        return connection;
    } finally {
        NDC.pop();
    }
}

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